A sequence can contain multiple tracks, with each track being a group of channels. A channel can be in one track, or can be shared among multiple tracks. For example, the following sequence has two tracks, and two channels, with both of the channels being in both of the tracks:

Two tracks in one sequence, with the same channels in both tracks

Notice that the two tracks have different timings than each other - in this case, the top track has timings every tenth of a second, and the bottom track every half a second.

All sequences are initially created with a single track. There are a few ways to add another track using the Sequence Editor:

Important: To share a channel between tracks, make sure to use one of the above duplication or copying commands. Do not simply set two different channels in different tracks to the same unit ID, circuit number, et cetera. Doing that will have unexpected and undesired results, as the two different channels compete for control over the same physical circuit.

If a sequence has more than one track, each will be displayed with a preceding track bar. The bar will be labeled with the track's number within the sequence (the track at the top is track #1, the next one down is track #2, and so forth). If the track is given a name (such as by "Change Track Name" of the Edit menu), it will also be displayed on the bar:

If the "Hide Track" item on that popup menu is selected, the track will no longer be displayed. However, the track's track bar still will be, and will indicate that the track has been hidden; clicking on it again to bring up the popup menu will now allow you to "Show Track":

For more detail on these and other track-related functions, please see: